Severe shortage (6)
I believe the answer is:
dearth
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">severe shortage</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for dearth that I've seen before include "In short supply" , "Shortage, paucity" , "Scarcity, paucity" , "Scarcity - famine" , "Hatred (anag) -- shortage" .)